MGR is a member of a notorious robber gang,but he is there purely to bring about a change in the gang and to mend its ways.Nambiar a member of the gang commits a murder for which MGR gets framed. To escape punishment for a crime that he does not commit, MGR dons a disguise and starts staying in a rich mans house passing as his long last son,which he truly is. Manohar a manager of the rich man tries to unmask MGR,while Nambiar who got MGR framed for the murder is also after him. How MGR thwarts the evil attempts of both Nambiar and Manohar,how the gang members mend their ways and how MGR returns to his parents is unfolded in this movie.